Automatic pump control



l. T. VINE.

AUTOMATIC PUMP CONTROlz.

APPLICATION FILED MAY 25. 1920:

1,392,372, v Patented Oct. 4; 1921.

U T D 'STA E -PA B T OFFICE.

"JERRY 'r, VINE, or

AUTOMATIC rem CONTROL.

gs awz f i Applieat i onfiled Mayi25,

To all whom'z' t may concern v "Be itknown thatI, JERR Y-,T. V1Nn,-, a citizen ofthe United States, residing at Seattle, in the county of King, State of ,lvashington, have invented certain new'a'nd useful Improvements in Automatic Pump Controls; and I dohereb'y declare the fol lowing to be a full, clear, and exact description, of the invention, such as will enable others skilled in the art to which it appertains to make and use the-same.

Thisinvention relates to air pumps, and more" especially topressure control mechanism'wher'eby the operation of the pump is tain limits.

regulated by the amount of airstored'; and

thebroad object of the invention is to provide means for starting or stoppingv the action of the pump rather quickly when the pressure has. increased ordecreased.v to cer- Thi's objectfis carried out bymeans of an v improved'pa-wl; and ratchetmechanism,con-' nected with a clutch between the driving shaft and the pump, such mechanism being actuated by a piston moved in one direction byair pressureandin thei opposite direction ibya'spr'ing.

Details, are :set forthbelow and shown. in thedrawings wherein: 7 v

Figure 1 isa generalside elevation of this Fig; Qis an enlarged detail oficertain, parts with: vthe travel. a 7 a V I v a The invention herein is described as em- -Eloyed: in connection with an ordinarypump SQ, although of, cour'se. ,it could be used) in when the rod is drawn onr to retract' the element 6 and open 'theIc hitchythe pump ceases;

Specification of Letters Patent.

Pivotally supported near each end of a fixed beam 20 is a ratchet wheel-21Yon which rocker at the c midlength. of its ,wheels'fili v a With this construction of parts, when the driven: from a'gpower :shaft :D. i for storing 1 air in aT, fromiwhich. it is drawn for or usefrom time 'to time through a service pipe other 'cimnections.w hereinishowmithe shaft D ;has; a ;power pinion w1 ,meshing: with 'the geari mounted; loosely'on av crank shaft 3, to whose crankfl4 is connectedithe pitman Q V5.which leads to thevpis'ton within the pump P not necessary to illustrate; \anda clutch [6Jsplined on the, shaft 3. is. adapted 'to be moved into active engagementwith the gear 2,by a rod ,7 which isflconnectedto. a fork 8 loosely engaging v the hubjof said clutch.

When the ;latter is; advanced by pushing ,on

the rod, the pump commencesfito work.;- -and U Fneath. the .beam 20 as. shownflin: Fig. 2.

SEATTLE, WASHINGTON; nssrdnon or ONE-HALF TO THOMAS calmer, 0F SEATTLE, wasnmewom 'i a, v -Patlented 001;. a, 1921. 190 VSer1a11'o 384,O58. pipe 9 with, the tank T, the check valve 10. In one end mounted a piston 12,born'e normally inward rod 14-" is connected with the. piston and passes through the spring and, outward beyond the cylinder for the purpose of swinging a lever 15 to which the rod 7; is attached atthe point 17 Thel'lever ishe-rein shown as p voted at its lowerend at. the point 16, and jcarryinginechsinism at its upper end for retarding or delaying its swinging movement in either direction, as' willbe explained. v

rests the 'free end of a tension 'spring22 which is secured at its otherv end at 23 to the beam and is capable of adjustment by means ofa nut 24 on a stud bolt 25; and the springs '22. .are'so: disposedthat the ratchet wheels may turn outward or away from each vother,

but may not rotate in, the opposite; direcjtion'.) v

- Pivotally mounted at 30 on the upper end i of the lever 15 is ac rocker consisting'ofa head 31- and a stem 32 depending rigidly from its midlength andconnected at34with the 1 rod 14, -while each end, of the head carcries. an upstanding pawl 35 hooked, inward.

as shown at,36;land as seen in. Fig.2, the dlstance between: the pawls 35 is. less than thedistance-between. the outside of the two air'gpressure falls within-the tank, the expans on of the spring 13Hdraws vongrod 1 4,

swings lever cl-5nto. the left and closesthe' j. energy thus stored, 1 theupump continues :to operate and replenish the air exhausted.

vBut the airQ-isnot :taken from the tank, in time theurpressure .Will move the piston,

'12againstthelspring 13 and will pushon the rod 14. This results in swinging theJrocker onitspivot30untilits head 31 stands substan 'tially horizontal and vboth 'pawls. disengaged from the fratchets; and continued movement of therod 14 thBIl SWlIlgS thB lever outward with the head, while-the pawls travel be- Moyenrent ;ofthel lever: 1 5 draws onfl'the rod 7' and opens the clutch or otherwise controls .pipe havinga of the tank is a cylinder 11' within which is movably v as soon as the storedfenergy is reduced as by j'withdrawal; of some of the air within the ,tank, the pressure against the piston 12 de-y creases until the spring acts to'move it in} ward; this draws on the rod 14, pulls on the" latter ceases to operate.

ment of the parts to the r1 of the beam 20, when it engages the teeth on; the under sideof the ratchet, and travels around beneath the same and up on its outer sidethe parts coming to rest as seen in Fig. 1'. Now withthe pump-outof action,

stem 82 of the rocker, and tilts its head31 whenever the downward tendency of the right hand pawl whose hook 36 engages the ratchet, is sufiicient to overcome the tension of the spring 22 which retards the rotation of this ratchet, But as soonas the rocker is restored to its horizontal position, the left pawl strikes beneath the beam 20 andthe right pawl drops to a point where iti-will movefunder said beam as the rod 14 is moved'to the left by the expansion of the spring. 13. This movementswings the lever 15 whichcontrolsthe power, and the pump again N commences to j work.' As the [lever swings to its extreme inner pos' ition, the rocker tilts in a direction opposite to that shown in'Fig. 1 and its left hand pawl rises beyond the left hand ratchet and its hook 36 engages therewith. Continued acr tion of the pump will build up energy in the tank T, and eventually the p1ston 12 will again be moved outward to repeat the operation above described. I I I y f I H Thus itwill be seen that 'theprimary function of this device is to retard the movement of thelever 15 until the pressure hasrisen sofhigh' or fallen so low that a'push'or pull "on the rod 14: will'overcome the resistance set up by the, tension spring, 22" be'aring against that ratchetv wheel 21' which'is engaged by the pawl; but when this takesplace and the lever commences tomove, it is moved quickly to its opposite extreme position. and there latched in practically thelsame way against its return movement; It will-beobvious that the clutch mecha nisrn herein shownfand described is merely illustrative of onemeans for connectingthe power with Z the pump, which meansis controlled by movement of the lever 15;- Any appropriate connection could be employed, and in factthe movement of the lever could stoprand start the motor which drives the pump; ,Also 1 it will be clear that the energy stored by'the action of the pump need not necessarily be a v "in thepresence of two compressed air, the element Tmight in fact I v 'be afreservoir to contain water,and' the pistoncould be replaced by any element which 'W s s edf yl e p e sure" o the, water or other agent which represented the work performed. "Therefore the vbroadest latitude must be" given to the language 7 herein employed. v

' What-"is: claimed'is: l a

1. The combination with a power driven pump, a power control lever, a tank towhich V the pump delivers, a cylinder projecting from the tank, a" piston in the cylinder I moved in one directionby accumulated energy, and a spring movingthe' piston in the other'directiom'of a rocker pivoted toisaidj lever and having latches at' its opposite ends for holding the lever at either extreme position, and connections between said piston and rocker whereby movement of the piston will firstturn the rocker to unlat'c'h'it and then swing the lever to its opposite extreme.

the pump, delivers, acylinder' projecting from'lthe tank, a piston inlthe' cylinder moved in one direction by accumulated en- 7 2. The combination with a power driven pump, a power control lever, a tank to which i ergy, 'and a spring .mov-in the lpiston in the,

other direction, of'aT-s aped rockerfpi'voted at its-angle to said lever, pawls projecting from the extremitiesof its head, ratchets with one of which a pawl is adapted to enf gage in either extreme position of i the. lever,

of said ratchets', 'and a rod connecting the stem of the'rocker with saidpiston.

lever, a rod pivoted to the st c in ofthe rocker,

- tension m'eans for retarding the fmovements y In a mechanism of the typedescribed, V the combination withasWin'ging lever, a T-shape'd rocker pivoted at'its angle to the a and means for moving the. rod longitudi nally; of a beam fixedabovethe he'ad 'ofsaid:

rocke r,pawls rising fro'm its extremities and having hooked ends, ratchet wheels carried by the beam and spaced" aflgreaterdistance from" each other than j' are said pawls, and tension means for retarding the mtaaonpr said wheels i' tlie combination with "a swinging lever,1 a 1 T- ha e r ke r ve ts ang t *levergrod pivoted to thejstemi ofjthe rocker, 'and'means l for; moving the rod longitudi nal-ly ,ofabeam' fixed above the head of said rocker ,pawls rising! from its extremities and having ftheir endsxhooked inward; ratchet wheels mounted in said beam with their 'teeth fac ng upward at their outer. side's, said sides being spaced a greater distance} each i other' than are the pawls, and tensionsprings on the beam engaging said Wheels. 1

In testinrionywhereoftI aflix' niy signature,

echanism of i dhscribed, v 

